Agriculture implement



c. MQ HAMSTHAW AGRICULTURE IMPLEMENT an t 'I QLJ;

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5" ATTORNEY mJmldlllH c. M. HAMSHAW AGRICULTURE IMPLEMENT Original Filed Dec.. 9, 1918 Oct. 21. 1924. 1,512,596

- c. M. HAMSHAW AGRICULTURE IMPLEMENT original Filed nec. 9, 1918* s sheets-sneer 5 Patented Oct. 21, 1924.

UNITED STATES CLARENCE M. HAMSHAW. F SEATTLE,'WASHINGTON. l

AGRICULTURE IMPLEMENT.

Application led December 9, 1918,),Se1ia1 No. 265,997. Renewed May 5, 1923.

To all 'whom t may concern.'

Beit known that I, CLARENCE M. HAM- l SHAW, a citizen of the United States, residing at' Seattle, inthe county of King. and

W State of Washington, have invented a cerf tain new and useful Improvement in Agriculture Implements, of which the following is a specification. A

My invention relates to improvements in agricultural implements of the tractor type that arefadapted for cultivating the surface of the ground, preparing a' seed led and planting the seed and the object of my in.r

vent'ion is to provide an agricultural implement simple in its form of construction that embodies a tractor frame mounted oilv Wheels andI provided4 at its rear vend with a power driven drum-on whose periphery aredisposed knives for cultivating the soil, the drum being arranged to be driven in the same direction as the tractor wheels so thatl the rotation of the drum will tend to move the tractor frame forwardly. A

further object is to suspend the soil cutting L drum so that it may be 'raised or lowered to vary its depth of cnt 'or to raise such' drum clear of the ground. Ajstill further object of my invention is to provide means for leveling and'breaking the-soilv and larresting the stubble'and trash that is thrown rearwardly by the cutting drum, such means comprising a plurality of uprighty spaced pipes that are disposed slightly to the rear of the cutting drum and are connected with Fig. 2 is a plan view of the same` with the coverremoved and parts of `the steering mechanism `broken laway to reveal certain other parts;

Fig. 3 is a view partly in section and partly in elevation,substantially on broken line 3, 3-of Fig. 1; l

.a hopper s o that they may serve as` seedy Other andv `scriptionY and the accompanying drawings.-

Fig. 4' is a fragmentary plan viewillus-A trating the relative positions of the cutting knives on the drum; and f Fig. 51s an venlarged view in cross-section of one of the cutting knives andthe mounte ing therefor. t

Referring to the drawings, throughout whichflike refere-ncenumerals indicate like parts, the numeral Ypydesignatesv a frame that is mounted upon two rear tractor passes 'a sprocket chain 16 that extends rearwardly and around a smaller sprocketwheel 17 on a steering post 18'which vpost 18 is provided on its top end with a suitable steering wheel 20.

The wheels 8 and 9 are mounted for rotation on an axle 21 that is secured to the'.

`frame 7 by brackets 22 andth'at has its cen- 'tral portion bentv downwardly, asmore clearly shownin'Fig. 3, toafford sufficient room for an engine 23 that is rigidly supported upon bars 74 that areconnected with the frame 7 i Rigidly secured to the frame 7 and supported ata distance therebelow is a sublframe 24'upon the rear end of which is carried a rotatably mounted transverse shaft 26 is a cylindrical drum'that isprovided with an axle shaft 27 which projects from the ends thereof yand is connected by linksy 28 and 30 with the shaft/25, one of the links being disposed at leach end of the drum in such manner that thedrumiscou-pled to the tractor frame and adapted to move tliere erably arranged at an angle and disposed in offset'positions with rrespect to each other, as more clearly shown in Fig. 4:.

ico

The cutting knives 31are'secured to knife i holders 32 by bolts 33, which knife holders 32 are adapted to be riveted or bolted to the periphery of the drum 26.

.y The cutting knives '-31 are preferably dis posed in cylindrical rows around the drum 26, the knives of one row being inclined or angled in one direction and the knives of the next adjacent row beinginclined or angled in the opposite direction to prevent ridging oi the soil. 4

The upper side of the drum 26 is covered by a hood 34 of relatively heavy material that maybe riveted or otherwise rigidly secured to the links 28 and 8O so that it will serve as a protection for the top of the drum 2G and will prevent such drum from throwing dirt upwardly and forwardly on to the tractor mechanism.

The shaft 27 is provided on each end with a sprocket wheel 35 that is connected by sprocket chains 86 with a sprocket .pinion 87 on the shaft 25 and the shaft 25 is provided on each end with a sprocket wheel 38 that is connected by a sprocket chain 39 with a sprocket pinion 40 on they end of a transverse shaft 41 which may be the driv ing shaft of an engine 42.

By the arrangement just described it will be obvious that when the engine 42 is started the drum 26 may be driven at a greatly reduced speed of rotation in the'direction indicated by the arrow in Fig. l, thus causingv it to cut and tear up the s'oil and throw it rearwardly from such drum 26. v

Hinged to the rear portion of the hood 34- by mezns of pivotal connections 43 is a seed hopper 44 from the lower side of which projects a plurality or" pipes 45 that are arranged side by side in relatively closely spaced relation and serve the double function of ground leveling and seed conduit devices. rlfhe pipes 45also act as means for breakingthe soil as it is thrown rearwardly by the drum 26.

The pipes 45 are preferably inclined rearwardly as shown in Fig. l and. are slightly curved at their lower ends to insure that the stubble and trash thrown from the drum 26 will pass thereunder without clogging.

The upper portion oit-the hopper 44 may be connected with the hood 34 by chains 46 which serve to hold the hopper and pipes 45 in a substantially upright position when the pipes are not in contact with the soil.

The hopper 44 maybe provided with any suitable form of seed dispensing,` mechanism (not shown) whereby seed may be evenly ted through the pipes 45.

From the above description it will. he see that the weight of the hood hopper and pipes 45 are normally carried drum 26 thereby insuringsuiiicient to cause the druin 26 to dig into the For the purpose of limiting fr out of the drum 26 or of raising- .it en rely out of the ground l" have provided cable 4'? which is connected with hood e4 by' means oitj an eye bolt ice passes wardly over Aa l warhead traine 5i, thence downwardly and around a drum that is provided with a pawl 4S by which may be held in any desired posit in and is connected by gear wheels 53 and l t and clutch 55 with the driven shaft 251i such manner that when, the clutch 5h' is engaged the drum muy be rotated to lift the drum 26 and when the clutch 55 and pawl 49 are disengaged the tension of the table 47 will be released and the drinn 2G wi" be lowered.

The engine 23 is connected by bevel gears 59- and 56 with a transverse shaft 5i" that is provided near its ends with clutches 58 and 60 normally adapted to be held in opera-- tively engaged positions by springs Gl. The clutch 58 is connected by a pinion G2, gear wheel 63, pinion 64 and gear wheel (i5 with the tractor wheel 9, the pinion (S2 being; rig idly connected or integral with the cup member of the clutch 58 and the gear wheel 63iand pinion 64 being rigidly connected with' each other so that when the cup ineniber 58 oi the clutch is driven rotary motion at a greatly reduced speed will he connnunicated to the tractor wheel 9.

The clutch 8O is connected with the tractor wheel 8 by a train of `gears substantially identical with the gears just described that connect the clutch 58 with the tractor wheel 9.

The clutches 58 and GOare of well known form of construction each embodying a cup element that is integral with or rigidly cured to the adj acent gear pinion and a cone element that is splined upon the shaft 57 and normally held in engagement with lthe cup element by springs Gl.

|The clutches 58 and 60 are connected. with a lever arm 6G on the lower end of a steering post 67 by links 68 and 'YO which links are each provided with slots il that fit over a pin 72 in the end of the lever arm (i8 so that when the steering` post 67 is turned in a. clockwise direction as seen in Fig'. 2, the clutch 58 will be disengageth while the clutch GO will remain. in an engaged posi tion and when the steering1 post Gi" is turned in a contraclo i direction i'ihc clutch titl d ed, while the clutch 58 r "il remain in an engaged position, thus ina it possible to si h tractor bv gagging the power .troni eimer ot tur; wheels d or w, d Y

one tractor wheel -c i e oth.A wheel moves around it J .2

the tractor in small spa operation the engi 8 is i u Jact while the i 'ill ' cut inthe soil, thus tending'to pulverize the, Vsoil and preventthe throwin ent. sourcesof power so that `the speed oit travel of the tractor frame and the speed of rotation of the drum 26' may be varied independently of eachother. 1

One of the principal advantagesof my invention is that when the drum 26 is in operation. and isv digging into the soil'it will have `a tendency to move the'tractor frame forward so that only a `relative smalll .amount of power need be applied to'the tractor wheels.

. It is obvious'that the engine 23 is used to regulate the speed of'the tractor .while the drum 26, driven by the engine 4:2,A is

plowingv the ground, and also is used to drive the tractor when the drum 26 is raised from the ground.

The drum 26 is intended to be rotated at a relatively high rate of speed so that each of the knivesBl will make aelatively thin up of any large clods of earth. The dirt tiat is thrown rearwardly# by the knives 3l will ,Strike against the pipes 35 and be furtherbroken and lgveled byy suchpipes and the stuloblel andtrash that is thrown' rearwardly will also be caught'by .the pipes'35 Aandlleveled down, aty the same time seed will bedrilled into the prepared seed b'edthus completing the planting at a single operation.

The drum 26 may. be made to cut at any A vdesired depth and possesses an advantage over a. plow due to the fact that the s'oilfis shaved oli' in relatively .thin layers andgis broken and thoroughly vpulverizedl thereby forming a seed hed that will'be freejroml clo'ds and that will conserve moisture in the best .possible `man er.

'It is obvious that lc anges made be made in the form,'dimensions and arrangement of parts of my invention without departing from the Spirit .thereot "knives on the periphery of saidsoil cultivator and lmeans independent of said tractor driving meansfor rotating said soil cultivator and elevating the-sama..v`

2. An agricultural implement .Comprising a frame mountedon two rear tractor wheels` and onel forward 'wheel, power 4actuated driving means'connected with said tractor wheels, a rotatable soil cultivator.disposedl at the rear end of said frame, knives provided. on the periphery of said soil culti- .vator, links connecting the axial shaft of said soil cultivator with said frame to per# -mit vertical movement of said soil cu1tivator, andindependent power actuated means -for raising and lowering saidcultivator and rotating the same.

3.1mv anv agricultural implement, a frame mountedon two rear tractor wheels andl one forward guiding Wheel, a rotatable soil cultivator having Aan axial shaft and disposed atthe rear` en d of said frame, knives 'provided on they periphery ofsaid soil cultivator, links connectingA theA axial .shaft of 7 .said soil .cultivatr with said rameto per, mit. vertical movement of said soil cultiva- `tor, means for raising and lowering said soll cultivator and means for rotating vsaid soil cultivator and operating the' raisingand lowering means.

' In witness whereof, Ihereunto subscribe my name this v2nd day ofr December A. D.

CLARENCE M. 

